Lock-nut washer.



C. E. GREENE.

LOCK NUT WASHER.

APPLICATION FILED MAY 9. 1917.

Patented Apr. 15,

3 m 6 IE are 49/1 CHARLES normnnn, o HAsT'I Gs, F amer. I

' LOCK-NUT WASHER.

SpecificationjofLetters-gamut.

"mammal; 15, 1919.

Applioation'filed May 9', 1917. Serial No. 167,470.

Washers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention has for its object to provide an improved washer including means for engaging a longitudinally grooved bolt to secure the washer against rotary movement with relation thereto and carrying a lip adapted to be bent over one side face of a nut to lock the latter against rotation upon the bolt, the lip being so constructed as to facilitateinsertion of a suitable tool thereunder, whereby the lip can be more readily bent into engagement with the nut.

With this and other objects in view, the invention consists in the novel construction, combination and arrangement of parts as will be hereinafter specifically described, claimed and illustrated in the accompanying drawing, in which:

Figure 1 represents a side elevation of the improved nut lock,

Fig. 2 represents a plan view thereof,

Fig. 3 represents a transverse sectional view on the line 3-3 of Fig. 2,

Fig. 4 represents a plan view of the blank of the washer, and k r Fig. 5 represents an edge elevation of the washer. 7

Referring to the drawing in detail, where in similar reference numerals designate corresponding parts throughout the several views, the numeral 5 indicates a preferred type of bolt, having the usual external screw threads 6 extending inwardly and diametrically opposed longitudinal grooves 7 formed throughout the length of the threaded portion of the bolt shank. A nut 8. is fitted upon the threaded terminal of the bolt and is engaged b the lock washer, designated generally by t e numeral 9.

The washer is preferably constructed of malleable and bendable metal and .includes the circular body 10 having an opening 11 of adequate size to receive the threaded terminal of the bolt and provided with internal lips or projections 12, extending inwardly from the edge of the opening 11 and of such size as to be slidably received in the grooves 7 in the bolt to secure the latter against rotary movement within the washer. The body 10 is formed with a radial and tapered extension or tongue 13, which is adapted to be bent over one side face of the nut 8, as clearly shown in Figs. 1 and 2, to secure the nut against rotary movement upon the bolt.

The material from which the washer is constructed gradually decreases in thickness from a point diametrically opposite the tongue 13 to the terminal of the latter. At a point adjacent the connection of the tongue 13 with the body 10, a shoulder 14: is provided on the object-engaging face of the washer to insure proper bending of the tongue as it is moved against the side face of the nut 8.

In applying the nut lock to use, the washer 9 is slipped upon the bolt shank 5 and, with the object-engaging face 15 disposed inwardly, is moved against the object. The nut 8 is subsequently applied to and advanced upon the bolt 5 until it firmly clamps the washer 9. The extreme terminal of the ton e 13 is retained in spaced relation to the object with which the washer is engaged by the shoulder 14, so as to permit of the convenient insertion of a suitable pointed tool beneath the tongue, whereby the latter may be bent outwardly against the side face of the nut to establish a non-rotatable connection between the nut and the bolt.

What I claim is:

1. A look washer comprising a circular body of varying thickness, a plurality of inwardly extending projections engageable with a bolt to prevent rotation of the washer, and an outwardly radially extending tongue of thickness less than that of the adjacent side of the washer whereby a shoulder is formed permitting easy insertion of a tool washer being flushed whereby a shoulder is 10 between the tongue and work to bend the formed between the opposed face of the tongue into engagement with the nut. tongue and the washer.

2. A look washer comprising a circular In testimony whereof I aflix my signature 5 body having one of its faces inclined toward in presence of'two wltnesses.

the other, means for preventing the rotation V I CHARLES E. GREENE. of the washer on a bolt, and a tongue of Witnesses:

lesser thiclmess than the adjacent section of J; -W; CASE,-

the washer, one face of the tongue and A. J. MALTBY.

Copies of this patent may be obtained for fi've cents each, by addressing the Commissioner of Patents,

' c Washington, D. 0; V f1 

